Method for transferring information between base station and terminal, base station, terminal, and system

ABSTRACT

A base station, a terminal, a system, and a method for transferring information between the base station and the terminal includes receiving a broadcast channel, where the broadcast channel is used to transfer basic physical layer configuration information of a cell and to transfer first specific content agreed between the terminal and the base station, wherein the first specific content includes configuration information required by the terminal to access a network; and parsing out the first specific content from the broadcast channel.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.15/849,608, filed on Dec. 20, 2017, which is a continuation of U.S.patent application Ser. No. 15/365,206, filed on Nov. 30, 2016, now U.S.Pat. No. 9,872,229, which is a continuation of U.S. patent applicationSer. No. 14/869,664, filed on Sep. 29, 2015, now U.S. Pat. No.9,532,300, which is a continuation of International Application No.PCT/CN2014/074502, filed on Apr. 1, 2014, which claims priority toChinese Patent Application No. 201310137854.X, filed on Apr. 5, 2013.All of the afore-mentioned patent applications are hereby incorporatedby reference in their entireties.

TECHNICAL FIELD

The present application relates to the field of communicationstechnologies, and in particular, to a method for transferringinformation between a base station and a terminal, a base station, aterminal, and a system.

BACKGROUND

The 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE)project is the largest new-technology research and development projectlaunched by the 3GPP in recent years. Such a network using OrthogonalFrequency Division Multiplexing/Frequency Division Multiple Access(OFDM/FDMA) as a core technology may be considered as a “quasi-4G”network, and is greatly advantageous over another network. Therefore, anoperator gradually expands deployment of a 3GPP LTE network.

In addition, to reduce maintenance costs of an entire network, theoperator also gradually reduces maintenance on another network, forexample, reduces services of a Global System for MobileCommunication/General Packet Radio Service (GSM/GPRS) network.

The Internet of Things (IoT) refers to a network in which informationabout the physical world is acquired by deploying various devices havingsense, computation, execution, and communication capabilities, andinformation transmission, collaboration, and processing are implementedusing a network, in order to implement interconnection between a humanand a thing and between one thing and another thing. Possibleapplications include various aspects such as a smart grid, intelligentagriculture, intelligent transportation, and environmental monitoring.The development of the Internet of Things is honored as the third waveof the information industry after the computer and the Internet, onwhich great expectations are held, and the Internet of Things isextremely popular and valued in research institutions and the industry.In addition, a related standard organization also starts work ofstandardization of related technologies of the Internet of Things.

Machine-to-Machine (M2M) is a technology and standardization conceptproposed by the 3GPP to study how to carry an application of theInternet of Things on a mobile communication network, and a specializedproject group is set up to study enhancement or optimization that needsto be performed on the mobile communication network because ofintroduction of an M2M communication (MTC) device. The reason is thatbecause a terminal in a GSM/GPRS network has a low price, most M2Mapplication providers are more inclined to provide an M2M service usingthe GSM/GPRS network based on a GSM/GPRS terminal, which conflicts withthe foregoing network planning and deployment of the operator. Theoperator hopes that an LTE network based terminal whose costs arecomparable to costs of the GSM/GPRS terminal or even lower than thecosts of the GSM/GPRS terminal can be provided, to attract an M2Mservice provider to select an LTE network to provide an M2M service,thereby implementing migration of an M2M application from a GSM/GRPSnetwork to the LTE network.

Provision of low-cost MTC user equipments (UEs) based on LTE (provisionof low-cost MTC UEs based on LTE) is exactly a project group that aimsto reduce costs of an LTE terminal to enhance support from an LTEnetwork to an M2M application. The project group proposes that reducingtransmitting/receiving bandwidth supported by an LTE terminal caneffectively decrease costs of the LTE terminal. A terminal whosesupported transmitting/receiving bandwidth is reduced is referred to asa narrowband terminal.

A possible implementation method for supporting a narrowband terminal ina system is dividing a broadband of the system into multiple narrowbands. As shown in FIG. 1, each narrowband obtained through divisionincludes a control channel and/or a data channel, for example, anEnhanced Physical Downlink Control Channel (ePDCCH) and/or a PhysicalDownlink Shared Channel (PDSCH).

If the foregoing narrowband terminal cannot receive a conventionalPhysical Downlink Control Channel (PDCCH) but can receive only anePDCCH, how to effectively notify the narrowband terminal of informationsuch as division of the foregoing narrowbands and a configuration of theePDCCH is a problem that needs to be resolved.

In addition, application scenarios of some narrowband terminals arerelatively special. For example, for an intelligent instrument in abasement, because of a relatively large penetration loss, a space lossis relatively large, and to provide an effective service to theintelligent instrument, targeted coverage enhancement needs to beperformed on the intelligent instrument, for example, transmission isrepeated multiple times. Moreover, these terminals are generally in astatic or low-speed moving state, and some conventional systeminformation, for example, system information about system bandwidth andsystem information about mobility management, may become meaningless tothese terminals. A possible method is reorganizing all necessary systeminformation, to form one piece of comprehensive system information forthe foregoing narrowband terminal for centralized transmission. How toeffectively send the foregoing comprehensive system information is alsoa problem that needs to be resolved.

For an New Carrier Type (NCT) technology that does not support aconventional PDCCH but supports only an ePDCCH, how a terminal acquiresePDCCH configuration information on a corresponding carrier is also aproblem that needs to be resolved.

In other approaches, for narrowband configuration information, ePDCCHconfiguration information, and comprehensive system informationconfiguration information of the narrowband terminal, and for ePDCCHconfiguration information of the NCT technology, a method in which alocation that is pre-defined and fixed is used as a location of an MTCnarrowband, comprehensive system information, or an ePDCCH, or as alocation for sending an MTC narrowband, comprehensive systeminformation, or ePDCCH configuration information is used, such that theterminal may obtain information about a narrowband, comprehensive systeminformation, and/or an ePDCCH from the foregoing pre-defined and fixedlocation.

The solution in the other approaches lacks flexibility. Because of theexistence of frequency selective fading, the fixed location may causethat the foregoing information or configuration information is in arelatively poor channel state for a long time, and the terminal cannoteffectively acquire the information or the configuration information;moreover, for a narrowband terminal that requires coverage enhancement,because system information or comprehensive system information is sentby scheduling a control channel, in a coverage enhancement scenario, thecontrol channel also needs to be enhanced. Therefore, to send theforegoing system information or comprehensive system information, thecontrol channel for the system information or the comprehensive systeminformation needs to be scheduled to perform transmission multipletimes. On one hand, resources are wasted; and on the other hand, becausethe control channel that is sent multiple times may also be incorrectlyinterpreted, a higher error probability is caused, thereby increasing atime for distributing the system information.

SUMMARY

In view of this, embodiments of the present application provide a methodfor transferring information between a base station and a terminal, abase station, a terminal, and a system, which diversify manners fortransferring information between a base station and a terminal.

According to a first aspect, an embodiment of the present applicationprovides a method for transferring information between a base stationand a terminal, including receiving a broadcast channel, where thebroadcast channel is not only used for transferring basic physical layerconfiguration information of a cell, but also used for transferringfirst specific content agreed between the terminal and the base station,and the first specific content is used for transferring configurationinformation required by the terminal to access a network; and parsingout the first specific content from the broadcast channel.

According to a second aspect, with reference to a possibleimplementation manner of the first aspect, a broadband of the cell isdivided into multiple narrowbands, the first specific content includesnarrowband configuration information, the parsing out the first specificcontent from the broadcast channel includes parsing out the narrowbandconfiguration information from the first specific content, and themethod further includes performing frequency hopping among the multiplenarrowbands or in an entire frequency band according to the narrowbandconfiguration information that is parsed out, and selecting a narrowbandor a frequency range with a good signal to camp on.

According to a third aspect, with reference to a possible implementationmanner of the first aspect or second aspect, the narrowbandconfiguration information includes at least one of information about anarrowband location, information about a quantity of the narrowbands,and information about narrowband composition.

According to a fourth aspect, with reference to possible implementationmanners of the first aspect to the third aspect, the broadband of thecell or a narrowband obtained through division includes an ePDCCH, thefirst specific content further includes ePDCCH configurationinformation, parsing out the first specific content from the broadcastchannel further includes parsing out the ePDCCH configurationinformation from the broadcast channel, and the method further includesdetermining a used ePDCCH according to the ePDCCH configurationinformation; and listening on the used ePDCCH, and receiving a PDSCHaccording to the ePDCCH.

According to a fifth aspect, with reference to a possible implementationmanner of the first aspect, the first specific content further includescomprehensive system information including some or all content of systeminformation, parsing out the first specific content from the broadcastchannel further includes parsing out the comprehensive systeminformation from the first specific content, and the method furtherincludes acquiring system configuration information according to thecomprehensive system information.

According to a sixth aspect, with reference to a possible implementationmanner of the first aspect, the first specific content includes firstcontrol information, the first control information indicates a manner inwhich the terminal acquires second specific content, the second specificcontent is used for transferring the configuration information requiredby the terminal to access the network, and the method further includesparsing out the first control information from the first specificcontent; and receiving the second specific content in the mannerindicated in the first control information.

According to a seventh aspect, with reference to a possibleimplementation manner of the sixth aspect, the second specific contentfurther includes a setting manner of the specific content, the parsingout the specific content from the broadcast channel is parsing out thespecific content from the broadcast channel in the setting manner of thespecific content.

According to an eighth aspect, with reference to a possibleimplementation manner of the sixth aspect or seventh aspect, thenarrowband configuration information includes at least one ofinformation about a narrowband location, information about a quantity ofthe narrowbands, and information about narrowband composition.

According to a ninth aspect, with reference to a possible implementationmanner of the eighth aspect, the broadband of the cell or a narrowbandobtained through division includes an ePDCCH, the second specificcontent further includes ePDCCH configuration information, receiving thesecond specific content in the manner indicated in the first controlinformation further includes parsing out the ePDCCH configurationinformation from the broadcast channel in the manner indicated in thefirst control information, and the method further includes determining aused ePDCCH according to the ePDCCH configuration information; andlistening on the used ePDCCH, and receiving a PDSCH according to theePDCCH.

According to a tenth aspect, with reference to possible implementationmanners of the first aspect to the tenth aspect, the second specificcontent further includes comprehensive system information including someor all content of system information, and parsing out the secondspecific content from the broadcast channel further includes parsingout, from the second specific content, the comprehensive systeminformation including the some or all content of the system information.

According to an eleventh aspect, with reference to a possibleimplementation manner of the second aspect, or third aspect, or fourthaspect, or tenth aspect, the first control information includesinformation about a time-frequency resource used by the terminal toreceive the second specific content, and receiving the second specificcontent in the manner indicated in the first control informationincludes when the time-frequency resource for receiving the secondspecific content is a broadcast channel, parsing out the second specificcontent from the broadcast channel; and when the time-frequency resourcefor receiving the second specific content is another time-frequencyresource, receiving, from the other time-frequency resource, the secondspecific content sent by the base station.

According to a twelfth aspect, with reference to a possibleimplementation manner of the fourth aspect or tenth aspect, the firstcontrol information further includes at least one of a coding scheme anda redundancy version of the second specific content, and the receivingthe second specific content in the manner indicated in the first controlinformation includes parsing out the second specific content from thebroadcast channel according to the coding scheme and the redundancyversion in the first control information.

According to a thirteenth aspect, with reference to possibleimplementation manners of the first aspect to the tenth aspect, thesecond specific content includes second control information, the secondcontrol information indicates a manner in which the terminal acquiresthird specific content, the third specific content is used fortransferring the configuration information required by the terminal toaccess the network, and the method further includes parsing out thesecond control information from the second specific content; andreceiving the third specific content in the manner indicated in thesecond control information.

According to a fourteenth aspect, with reference to a possibleimplementation manner of the seventh aspect or tenth aspect, the secondcontrol information includes information about a time-frequency resourceused by the terminal to receive the third specific content, andreceiving the third specific content in the manner indicated in thesecond control information includes, when the time-frequency resourcefor receiving the third specific content is a broadcast channel, parsingout the third specific content from the broadcast channel; and when thetime-frequency resource for receiving the third specific content isanother time-frequency resource, receiving, from the othertime-frequency resource, the third specific content sent by the basestation.

According to a fifteenth aspect, with reference to possibleimplementation manners of the first aspect to the fourteenth aspect, thesecond control information further includes at least one of a codingscheme and a redundancy version of the third specific content, and theparsing out the third specific content from the broadcast channel isparsing out the third specific content from the broadcast channelaccording to the coding scheme and the redundancy version in the secondcontrol information.

According to a sixteenth aspect, with reference to possibleimplementation manners of the first aspect to the fifteenth aspect, abroadband of the cell is divided into multiple narrowbands, the thirdspecific content includes narrowband configuration information, theparsing out the third specific content from the broadcast channelincludes parsing out the narrowband configuration information from thethird specific content, and the method further includes performingfrequency hopping among the multiple narrowbands or in an entirefrequency band according to the narrowband configuration informationthat is parsed out, and selecting a narrowband or a frequency range witha good signal to camp on.

According to a seventeenth aspect, the narrowband configurationinformation includes at least one of information about a narrowbandlocation, information about a quantity of the narrowbands, andinformation about narrowband composition.

According to an eighteenth aspect, with reference to a possibleimplementation manner of the sixteenth aspect or seventeenth aspect, thebroadband of the cell or a narrowband obtained through division includesan ePDCCH, the third specific content further includes ePDCCHconfiguration information, the parsing out the third specific contentfrom the broadcast channel further includes parsing out the ePDCCHconfiguration information from the broadcast channel, and the methodfurther includes determining a used ePDCCH according to the ePDCCHconfiguration information; and listening on the used ePDCCH, andreceiving a PDSCH according to the ePDCCH.

According to a nineteenth aspect, with reference to any aspect of thethirteenth aspect to the eighteenth aspect, the third specific contentfurther includes comprehensive system information including some or allcontent of system information, and parsing out the third specificcontent from the broadcast channel further includes parsing out, fromthe third specific content, the comprehensive system informationincluding the some or all content of the system information.

According to a twentieth aspect, with reference to any implementationmanner of the thirteenth aspect to the nineteenth aspect, the firstspecific content, the second specific content, and the third specificcontent are indicated using any bit in binary code identifying thebroadcast channel.

According to a twenty-first aspect, with reference to the second aspectto the fifth aspect, or the seventh aspect to the tenth aspect, or thesixteenth aspect to the twentieth aspect, the narrowband configurationinformation includes information about a narrowband location, and thenarrowband location is obtained by the base station through divisionaccording to the broadcast channel.

According to a twenty-second aspect, with reference to the fourthaspect, or the ninth aspect, or the eighteenth aspect, the ePDCCHconfiguration information includes information about an ePDCCH location,and the ePDCCH location is obtained by the base station through divisionaccording to the broadcast channel.

According to a twenty-third aspect, with reference to any possibleimplementation manner of the thirteenth aspect to the twenty-secondaspect, the time-frequency resource in the first control information andused by the terminal to receive the second specific content and/or thetime-frequency resource in the second control information and used bythe terminal to receive the third specific content is obtained by thebase station through division according to the broadcast channel.

According to a twenty-fourth aspect, with reference to any possibleimplementation manner of the first aspect to the twenty-third aspect,the parsing out the first specific content from the broadcast channelincludes determining whether the first specific content is required; andif the first specific content is required, parsing out the firstspecific content from the broadcast channel.

According to a twenty-fifth aspect, with reference to any possibleimplementation manner of the first aspect to the twenty-fourth aspect,the broadcast channel is a PBCH or an ePBCH.

According to a twenty-sixth aspect, with reference to any implementationmanner of the thirteenth aspect to the twenty-second aspect, the codingscheme and the redundancy version of the second specific content in thefirst control information and/or the coding scheme and the redundancyversion of the third specific content in the second control informationare obtained by the base station through division according to thebroadcast channel.

According to a twenty-seventh aspect, an embodiment of the presentapplication provides a terminal, including a first receiving unitconfigured to receive a broadcast channel, and send the receivedbroadcast channel to a first parsing unit, where the broadcast channelis not only used for transferring basic physical layer configurationinformation of a cell, but also used for transferring first specificcontent agreed between the terminal and a base station, and the firstspecific content is used for transferring configuration informationrequired by the terminal to access a network; and the first parsing unitconfigured to receive the broadcast channel sent by the first receivingunit, and parse out the first specific content from the broadcastchannel.

According to a twenty-eighth aspect, with reference to a possibleimplementation manner of the twenty-seventh aspect, a broadband of thecell is divided into multiple narrowbands, and the first specificcontent includes narrowband configuration information, and the firstparsing unit includes a first parsing subunit configured to parse outthe narrowband configuration information from the first specificcontent, and the terminal further includes a first frequency modulationunit configured to perform frequency hopping among the multiplenarrowbands or in an entire frequency band according to the narrowbandconfiguration information that is parsed out, and select a narrowband ora frequency range with a good signal to camp on.

According to a twenty-ninth aspect, with reference to a possibleimplementation manner of the twenty-eighth aspect, the narrowbandconfiguration information includes at least one of information about anarrowband location, information about a quantity of the narrowbands,and information about narrowband composition.

According to a thirtieth aspect, with reference to a possibleimplementation manner of the twenty-eighth aspect or twenty-ninthaspect, the broadband of the cell or a narrowband obtained throughdivision includes an ePDCCH, and the first specific content furtherincludes ePDCCH configuration information, and the first parsing unitfurther includes a second parsing subunit configured to parse out theePDCCH configuration information from the broadcast channel, and theterminal further includes a first determining unit configured todetermine a used ePDCCH according to the ePDCCH configurationinformation; and a first listening unit configured to listen on the usedePDCCH, and receive a PDSCH according to the ePDCCH.

According to a thirty-first aspect, with reference to possibleimplementation manners of the twenty-seventh aspect to the thirtiethaspect, the first specific content further includes comprehensive systeminformation including some or all content of system information, and thefirst parsing unit further includes a third parsing subunit configuredto parse out the comprehensive system information from the firstspecific content, and the terminal includes an first acquiring unitconfigured to acquire system configuration information according to thecomprehensive system information.

According to a thirty-second aspect, with reference to a possibleimplementation manner of the twenty-seventh aspect, the first specificcontent includes first control information, the first controlinformation indicates a manner in which the terminal acquires secondspecific content, and the terminal further includes a second parsingunit configured to receive the first specific content sent by the firstparsing unit, parse out the first control information from the firstspecific content, and send the first control information that is parsedout to a second receiving unit; and the second receiving unit configuredto receive the first control information sent by the second parsingunit, and receive the second specific content in the manner indicated inthe first control information.

According to a thirty-third aspect, with reference to a possibleimplementation manner of the thirty-second aspect, a broadband of thecell is divided into multiple narrowbands, and the second specificcontent includes narrowband configuration information, and the secondreceiving unit includes a fourth parsing subunit configured to parse outthe narrowband configuration information from the second specificcontent, and the terminal further includes a second frequency modulationunit configured to perform frequency hopping among the multiplenarrowbands or in an entire frequency band according to the narrowbandconfiguration information that is parsed out, and select a narrowband ora frequency range with a good signal to camp on.

According to a thirty-fourth aspect, with reference to a possibleimplementation manner of the thirty-third aspect, the narrowbandconfiguration information includes at least one of information about anarrowband location, information about a quantity of the narrowbands,and information about narrowband composition.

According to a thirty-fifth aspect, with reference to a possibleimplementation manner of the thirty-third aspect or thirty-fourthaspect, the broadband of the cell or a narrowband obtained throughdivision includes an ePDCCH, and the second specific content furtherincludes ePDCCH configuration information, the second receiving unitfurther includes a fifth parsing subunit configured to parse out theePDCCH configuration information from the broadcast channel, and theterminal further includes a second determining unit configured todetermine a used ePDCCH according to the ePDCCH configurationinformation; and a second listening unit configured to listen on theused ePDCCH, and receive a PDSCH according to the ePDCCH.

According to a thirty-sixth aspect, with reference to possibleimplementation manners of the thirty-third aspect to the thirty-fifthaspect, the second specific content further includes comprehensivesystem information including some or all content of system information,and the second receiving unit further includes a sixth parsing subunitconfigured to parse out, from the second specific content, thecomprehensive system information including the some or all content ofthe system information; and a second acquiring subunit configured toacquire system configuration information according to the comprehensivesystem information.

According to a thirty-seventh aspect, with reference to a possibleimplementation manner of the thirty-second aspect, the first controlinformation includes information about a time-frequency resource used bythe terminal to receive the second specific content, and the secondreceiving unit further includes a first receiving subunit configured to,when the time-frequency resource for receiving the second specificcontent is a broadcast channel, parse out the second specific contentfrom the broadcast channel; and a second receiving subunit configuredto, when the time-frequency resource for receiving the second specificcontent is another time-frequency resource, receive, from the othertime-frequency resource, the second specific content sent by the basestation.

According to a thirty-eighth aspect, with reference to a possibleimplementation manner of the thirty-seventh aspect, the first controlinformation further includes at least one of a coding scheme and aredundancy version of the second specific content, and the parsing out,by the first receiving subunit, the second specific content from thebroadcast channel is parsing out, by the first receiving subunit, thesecond specific content from the broadcast channel according to thecoding scheme and the redundancy version in the first controlinformation.

According to a thirty-ninth aspect, with reference to a possibleimplementation manner of the thirtieth aspect, thirty-seventh aspect, orthirty-eighth aspect, the second specific content includes secondcontrol information, the second control information indicates a mannerin which the terminal acquires third specific content, and the terminalfurther includes a third parsing unit configured to receive the secondspecific content sent by the second receiving unit, parse out the secondcontrol information from the second specific content, and send thesecond control information that is parsed out to a third receiving unit;and the third receiving unit configured to receive the second controlinformation sent by the third parsing unit, and receive the thirdspecific content in the manner indicated in the second controlinformation.

According to a fortieth aspect, with reference to a possibleimplementation manner of the thirty-ninth aspect, the second controlinformation includes information about a time-frequency resource used bythe terminal to receive the third specific content, and the thirdreceiving unit includes a third receiving subunit configured to, whenthe time-frequency resource for receiving the third specific content isa broadcast channel, parse out the third specific content from thebroadcast channel; and a fourth receiving subunit configured to, whenthe time-frequency resource for receiving the third specific content isanother time-frequency resource, receive, from the other time-frequencyresource, the third specific content sent by the base station.

According to a forty-first aspect, with reference to a possibleimplementation manner of the fortieth aspect, the second controlinformation further includes at least one of a coding scheme and aredundancy version of the third specific content, and the parsing out,by the third receiving subunit, the third specific content from thebroadcast channel is parsing out, by the third receiving subunit, thethird specific content from the broadcast channel according to thecoding scheme and the redundancy version in the second controlinformation.

According to a forty-second aspect, with reference to a possibleimplementation manner of the forty-first aspect, a broadband of the cellis divided into multiple narrowbands, and the third specific contentincludes narrowband configuration information, and the terminal furtherincludes a third frequency modulation unit configured to performfrequency hopping among the multiple narrowbands or in an entirefrequency band according to the narrowband configuration informationthat is parsed out, and select a narrowband or a frequency range with agood signal to camp on.

According to a forty-third aspect, with reference to a possibleimplementation manner of the forty-second aspect, the narrowbandconfiguration information includes at least one of information about anarrowband location, information about a quantity of the narrowbands,and information about narrowband composition.

According to a forty-fourth aspect, with reference to a possibleimplementation manner of the forty-second aspect or forty-third aspect,the broadband of the cell or a narrowband obtained through divisionincludes an ePDCCH, the third specific content further includes ePDCCHconfiguration information, the parsing out, by the third receivingsubunit, the third specific content from the broadcast channel furtherincludes parsing out, by the third receiving subunit, the ePDCCHconfiguration information from the broadcast channel, and the terminalfurther includes a third determining unit configured to determine a usedePDCCH according to the ePDCCH configuration information, and sendinformation about the determined used ePDCCH to a listening unit; and athird listening unit configured to receive the ePDCCH information sentby the determining unit, listen on the used ePDCCH, and receive a PDSCHaccording to the ePDCCH.

According to a forty-fifth aspect, with reference to any possibleimplementation manner of the thirty-ninth aspect to the forty-fourthaspect, the third specific content further includes comprehensive systeminformation including some or all content of system information, and thethird receiving unit further includes a seventh parsing subunitconfigured to parse out the system configuration information from thethird specific content; and a third acquiring subunit configured toacquire system configuration information according to the comprehensivesystem information.

According to a forty-sixth aspect, with reference to any possibleimplementation manner of the thirty-ninth aspect to the forty-fifthaspect, the first specific content, the second specific content, and thethird specific content are indicated using a reserved bit in binary codeidentifying the broadcast channel.

According to a forty-seventh aspect, with reference to a possibleimplementation manner of the twenty-eighth aspect, thirty-third aspect,or forty-second aspect, the narrowband configuration informationincludes information about a narrowband location, and the narrowbandlocation is obtained by the base station through division according tothe broadcast channel.

According to a forty-eighth aspect, with reference to a possibleimplementation manner of the thirtieth aspect, thirty-first aspect, orthirty-second aspect, the ePDCCH configuration information includesinformation about an ePDCCH location, and the ePDCCH location isobtained by the base station through division according to the broadcastchannel.

According to a forty-ninth aspect, with reference to possibleimplementation manners of the thirty-second aspect to the thirty-eighthaspect, the time-frequency resource in the first control information andused by the terminal to receive the second specific content and/or thetime-frequency resource in the second control information and used bythe terminal to receive the third specific content is obtained by thebase station through division according to the broadcast channel.

According to a fiftieth aspect, with reference to any possibleimplementation manner of the twenty-ninth aspect to the forty-ninthaspect, the first parsing unit includes a determining subunit configuredto determine whether the first specific content is required, and if thefirst specific content is required, send an indication to a parsingsubunit; and the parsing subunit configured to, after receiving theindication sent by the determining subunit, parse out the first specificcontent from the broadcast channel.

According to a fifty-first aspect, with reference to any possibleimplementation manner of the twenty-ninth aspect to the fiftieth aspect,the broadcast channel is a PBCH or an ePBCH.

According to a fifty-second aspect, with reference to any implementationmanner of the thirtieth aspect to the fifty-first aspect, the codingscheme and the redundancy version of the second specific content in thefirst control information and/or the coding scheme and the redundancyversion of the third specific content in the second control informationare obtained by the base station through division according to thebroadcast channel.

According to a fifty-third aspect, a base station includes abroadcasting unit configured to send a broadcast channel to a terminal,where the broadcast channel is not only used for transferring basicphysical layer configuration information of a cell, but also used fortransferring first specific content agreed between the terminal and thebase station, and the first specific content is used for transferringconfiguration information required by the terminal to access a network.

According to a fifty-fourth aspect, with reference to a possibleimplementation manner of the fifty-third aspect, a broadband of the cellis divided into multiple narrowbands, and the first specific contentincludes narrowband configuration information, such that the terminalperforms frequency hopping among the multiple narrowbands or in anentire frequency band according to the narrowband configurationinformation that is parsed out, and selects a narrowband or a frequencyrange with a good signal to camp on.

According to a fifty-fifth aspect, with reference to a possibleimplementation manner of the fifty-fourth aspect, the narrowbandconfiguration information includes at least one of information about anarrowband location, information about a quantity of the narrowbands,and information about narrowband composition.

According to a fifty-sixth aspect, with reference to the fifty-fourthaspect or the fifty-fifth aspect, the broadband of the cell or anarrowband obtained through division includes an ePDCCH, and the firstspecific content further includes ePDCCH configuration information, suchthat the terminal determines a used ePDCCH according to the ePDCCHconfiguration information; and listens on the used ePDCCH, and receivesa PDSCH according to the ePDCCH.

According to a fifty-seventh aspect, with reference to a possibleimplementation manner of any aspect of the fifty-third aspect to thefifty-sixth aspect, the first specific content further includescomprehensive system information including some or all content of systeminformation, such that the terminal parses out the comprehensive systeminformation from the first specific content, and acquires systemconfiguration information according to the comprehensive systeminformation.

According to a fifty-eighth aspect, with reference to a possibleimplementation manner of the fifty-fifth aspect, the first specificcontent includes first control information, the first controlinformation indicates a manner in which the terminal acquires secondspecific content, and the second specific content is used fortransferring the configuration information required by the terminal toaccess the network, such that the terminal parses out the first controlinformation from the first specific content; and receives the secondspecific content in the manner indicated in the first controlinformation.

According to a fifty-ninth aspect, with reference to a possibleimplementation manner of the fifty-third aspect, a broadband of the cellis divided into multiple narrowbands, and the second specific contentincludes narrowband configuration information, such that the terminalperforms frequency hopping among the multiple narrowbands or in anentire frequency band according to the narrowband configurationinformation that is parsed out, and selects a narrowband or a frequencyrange with a good signal to camp on.

According to a sixtieth aspect, with reference to a possibleimplementation manner of the fifty-seventh aspect, the narrowbandconfiguration information includes at least one of information about anarrowband location, information about a quantity of the narrowbands,and information about narrowband composition.

According to a sixty-first aspect, with reference to a possibleimplementation manner of the fifty-seventh aspect or fifty-eighthaspect, the broadband of the cell or a narrowband obtained throughdivision includes an ePDCCH, and the second specific content furtherincludes ePDCCH configuration information, such that the terminaldetermines a used ePDCCH according to the ePDCCH configurationinformation; and listens on the used ePDCCH, and receives a PDSCHaccording to the ePDCCH.

According to a sixty-second aspect, with reference to a possibleimplementation manner of the fifty-eighth aspect or fifty-ninth aspect,the second specific content further includes comprehensive systeminformation including some or all content of system information, suchthat the terminal parses out, from the second specific content, thecomprehensive system information including the some or all content ofthe system information, and further acquires system configurationinformation.

According to a sixty-third aspect, with reference to a possibleimplementation manner of the fifty-sixth aspect, the first controlinformation includes information about a time-frequency resource used bythe terminal to receive the second specific content, such that theterminal receives the second specific content using the correspondingtime-frequency resource.

According to a sixty-fourth aspect, with reference to a possibleimplementation manner of the sixty-first aspect, the first controlinformation further includes at least one of a coding scheme and aredundancy version of the second specific content, such that theterminal parses out the second specific content from the broadcastchannel according to the coding scheme and the redundancy version in thefirst control information.

According to a sixty-fifth aspect, with reference to a possibleimplementation manner of any aspect of the sixtieth aspect to thesixty-second aspect, the second specific content includes second controlinformation, the second control information indicates a manner in whichthe terminal acquires third specific content, and the third specificcontent is used for transferring the configuration information requiredby the terminal to access the network, such that the terminal parses outthe second control information from the second specific content; andreceives the third specific content in the manner indicated in thesecond control information.

According to a sixty-sixth aspect, with reference to a possibleimplementation manner of the sixty-third aspect, the second controlinformation includes information about a time-frequency resource used bythe terminal to receive the third specific content, such that theterminal receives the third specific content using the correspondingtime-frequency resource.

According to a sixty-seventh aspect, with reference to a possibleimplementation manner of the sixty-fourth aspect, the second controlinformation further includes at least one of a coding scheme and aredundancy version of the third specific content, such that the terminalparses out the third specific content from the broadcast channelaccording to the coding scheme and the redundancy version in the secondcontrol information.

According to a sixty-eighth aspect, with reference to a possibleimplementation manner of the sixty-seventh aspect, a broadband of thecell is divided into multiple narrowbands, and the third specificcontent includes narrowband configuration information, such that theterminal performs frequency hopping among the multiple narrowbands or inan entire frequency band according to the narrowband configurationinformation that is parsed out, and selects a narrowband or a frequencyrange with a good signal to camp on.

According to a sixty-ninth aspect, with reference to a possibleimplementation manner of the sixty-sixth aspect, the narrowbandconfiguration information includes at least one of information about anarrowband location, information about a quantity of the narrowbands,and information about narrowband composition.

According to a seventieth aspect, with reference to a possibleimplementation manner of either aspect of the sixty-fifth aspect or thesixty-sixth aspect, the broadband of the cell or a narrowband obtainedthrough division includes an ePDCCH, and the third specific contentfurther includes ePDCCH configuration information, such that theterminal determines a used ePDCCH according to the ePDCCH configurationinformation; and listens on the used ePDCCH, and receives a PDSCHaccording to the ePDCCH.

According to a seventy-first aspect, with reference to a possibleimplementation manner of any aspect of the sixty-third aspect to theseventieth aspect, the third specific content further includescomprehensive system information including some or all content of systeminformation, such that the terminal parses out, from the third specificcontent, the comprehensive system information including the some or allcontent of the system information, and further acquires the systemconfiguration information.

According to a seventy-second aspect, with reference to a possibleimplementation manner of any aspect of the sixty-third aspect to theseventy-first aspect, the base station further includes a first settingunit configured to set a reserved bit of the broadcast channel accordingto the first specific content, the second specific content, and thethird specific content, and/or identify the first specific content, thesecond specific content, and the third specific content using acorresponding bit of the broadcast channel.

According to a seventy-third aspect, with reference to a possibleimplementation manner of any aspect of the sixty-seventh aspect to theseventy-first aspect, the narrowband configuration information includesinformation about a narrowband location, and the base station furtherincludes a first dividing unit configured to perform division accordingto the broadcast channel to obtain the narrowband location; and a secondsetting unit configured to set a reserved bit of the broadcast channelaccording to a quantity of the narrowbands, and send the broadcastchannel to the broadcasting unit.

According to a seventy-fourth aspect, with reference to a possibleimplementation manner of any aspect of the sixty-eighth aspect to theseventieth aspect, the ePDCCH configuration information includesinformation about an ePDCCH location, and the base station furtherincludes a second dividing unit configured to perform division accordingto the broadcast channel to obtain the ePDCCH location; and a thirdsetting unit configured to set a reserved bit of the broadcast channelaccording to a quantity of ePDCCHs, and send the broadcast channel tothe broadcasting unit.

According to a seventy-fifth aspect, with reference to a possibleimplementation manner of any aspect of the sixty-second aspect to thesixty-eighth aspect, the first control information includes thetime-frequency resource used by the terminal to receive the secondspecific content, and the base station further includes a third dividingunit configured to perform division according to the broadcast channelto obtain a time-frequency resource used when the specific content issent to the terminal, and send an indication to a first sending unit;and the first sending unit configured to, after receiving the indicationsent by the third dividing unit, send the specific content to theterminal using the time-frequency resource obtained through division.

According to a seventy-sixth aspect, with reference to a possibleimplementation manner of any aspect of the sixty-second aspect to thesixty-eighth aspect, the second control information includes thetime-frequency resource used by the terminal to receive the thirdspecific content, and the base station further includes a fourthdividing unit configured to perform division according to the broadcastchannel to obtain a time-frequency resource used when the secondspecific content is sent to the terminal, and send an indication to asecond sending unit; and the second sending unit configured to, afterreceiving the indication of the fourth dividing unit, send the secondspecific content to the terminal using the time-frequency resource fortransferring the second specific content.

According to a seventy-seventh aspect, with reference to a possibleimplementation manner of any aspect of the fifty-third aspect to theseventy-sixth aspect, the broadcast channel is a PBCH or an ePBCH.

According to a seventy-eighth aspect, with reference to a possibleimplementation manner of any aspect of the fifty-third aspect to theseventy-seventh aspect, the coding scheme and the redundancy version ofthe second specific content in the first control information and/or thecoding scheme and the redundancy version of the third specific contentin the second control information are obtained by the base stationthrough division according to the broadcast channel.

According to a seventy-ninth aspect, a system for transferringinformation between a base station and a terminal includes the basestation according to any aspect above and the terminal according to anyaspect above.

Using the method for transferring information between a base station anda terminal, the base station, the terminal, and the system, the basestation can transfer information to the terminal through a broadcastchannel, such that manners for transferring information between the basestation and the terminal are diversified. Especially, for a terminalthat does not support a PDCCH, a base station can still transferinformation to the terminal.

BRIEF DESCRIPTION OF DRAWINGS

To describe the technical solutions in the embodiments of the presentapplication more clearly, the following briefly introduces theaccompanying drawings required for describing the embodiments. Theaccompanying drawings in the following description show some embodimentsof the present application, and a person of ordinary skill in the artmay still derive other drawings from these accompanying drawings withoutcreative efforts.

FIG. 1 is a schematic diagram of dividing a broadband of a system intomultiple narrowbands in the background;

FIG. 2 is a flowchart of a method for transferring information between abase station and a terminal according to an embodiment of the presentapplication;

FIG. 3 is a flowchart of another method for transferring informationbetween a base station and a terminal according to an embodiment of thepresent application;

FIG. 4 is a schematic structural diagram of a terminal according to anembodiment of the present application;

FIG. 5 is a schematic structural diagram of another terminal accordingto an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a first parsing unit of theterminal shown in FIG. 5;

FIG. 7 is a schematic structural diagram of a base station according toan embodiment of the present application; and

FIG. 8 is a schematic structural diagram of another base stationaccording to an embodiment of the present application.

DESCRIPTION OF EMBODIMENTS

The following clearly describes the technical solutions in theembodiments of the present application with reference to theaccompanying drawings in the embodiments of the present application. Thedescribed embodiments are merely some but not all of the embodiments ofthe present application. All other embodiments obtained by a person ofordinary skill in the art based on the embodiments of the presentapplication without creative efforts shall fall within the protectionscope of the present application.

For convenience of description of the technical solutions of theembodiments of the present application, in the embodiments of thepresent application, words such as “first” and “second” are used todistinguish between same objects or similar objects whose functions andpurposes are basically the same.

An embodiment of the present application provides a method fortransferring information between a base station and a terminal. As shownin FIG. 2, the method includes the following steps.

201: The terminal receives a broadcast channel, where the broadcastchannel is not only used for transferring basic physical layerconfiguration information of a cell, but also used for transferringfirst specific content agreed between the terminal and the base station,and the first specific content is used for transferring configurationinformation required by the terminal to access a network.

In this embodiment of the present application, which type of broadcastchannel is used is not limited. For example, the broadcast channel maybe a PBCH, or may be an ePBCH. Using a PBCH as an example, PBCHinformation includes 24-bit binary code. Currently, the base stationtransfers, to the terminal using the PBCH information, the basicphysical layer configuration information of the cell, for example,information such as system bandwidth, PHICH configuration, and higheight bits of an SFN (system frame number, system frame number).

In other approaches, a structure of the PBCH information is shown inTable 1.

TABLE 1 3 bits 3 bits 8 bits 10 bits Downlink PHICH System Reservedbandwidth configuration frame number

The binary bits in the PBCH information can be used to indicate theforegoing information; besides, the binary bits in the PBCH informationmay be reinterpreted, or a reserved bit may be set, such that the binarybits in the PBCH information can be further used to indicate otherspecific content, where the specific content may be any required contentagreed between the base station and the terminal, for example, may beePDCCH configuration information, narrowband configuration information,or comprehensive system information, or may be information forscheduling the foregoing information.

202: Parse out the first specific content from the broadcast channel.

According to the method for transferring information between a basestation and a terminal provided in this embodiment, the base station cantransfer information to the terminal through a broadcast channel, suchthat manners for transferring information between the base station andthe terminal are diversified. Especially, for a terminal that does notsupport a PDCCH, a base station can still transfer information to theterminal.

As an improvement of the foregoing embodiment, an embodiment of thepresent application provides another method for transferring informationbetween a base station and a terminal. Detailed description is providedbelow by assuming that a base station transfers, to a terminal through aPBCH, information except conventional information. As shown in FIG. 3,the method includes the following steps.

301: The terminal receives PBCH information that is broadcast by thebase station through a PBCH, where the PBCH information is not only usedfor transferring basic physical layer configuration information of acell, but also used for transferring first specific content agreedbetween the terminal and the base station, and the first specificcontent is used for transferring configuration information required bythe terminal to access a network.

302: The terminal parses out the first specific content from the PBCH.

For information in the first specific content, there may be thefollowing two cases, and the terminal executes different operationsaccording to different information in the first specific content.

Case 1:

The first specific content includes at least one of narrowbandconfiguration information, ePDCCH configuration information, and systemconfiguration information. In this case, there are the following fourexecution manners for the terminal.

The first one is that, a broadband of the cell is divided into multiplenarrowbands, the first specific content includes narrowbandconfiguration information, and the terminal parses out the narrowbandconfiguration information from the PBCH information. The process endsafter step 310 is performed.

Content executed on a base station side is that, the narrowbandconfiguration information includes at least one of information about anarrowband location, information about a quantity of the narrowbands,and information about narrowband composition, and the narrowbandlocation is obtained by the base station through division according tothe PBCH information. In an embodiment, while the base stationconstructs the PBCH information, as shown in Table 2, the base stationperforms division according to the constructed PBCH information toobtain a corresponding frequency resource as the narrowband location,and sets a reserved bit of the PBCH information according to a quantityof the narrowband resources and an interval between the narrowbandresources, or as shown in Table 2, the base station indicates a quantityof the narrowband resources and an interval between the narrowbandresources using a corresponding bit in non-reserved bits of the PBCHinformation.

TABLE 2 9 bits 10 bits 5 bits Start position of an Reserved Quantity ofMTC MTC narrowband narrowbands

The second one is that, a broadband of the cell includes an ePDCCH, thefirst specific content includes ePDCCH configuration information, andthe terminal parses out the ePDCCH configuration information from thePBCH information, and performs step 311 and a subsequent step.

Content executed on a base station side is that, the ePDCCHconfiguration information includes information about an ePDCCH location,and the ePDCCH location is obtained by the base station through divisionaccording to the PBCH information. In an embodiment, while the basestation constructs the PBCH information, as shown in Table 3, the basestation performs division according to the constructed PBCH informationto obtain a corresponding frequency resource as the ePDCCH location, andsets a reserved bit of the PBCH information according to a quantity ofePDCCHs, or as shown in Table 3, the base station indicates a quantityof ePDCCHs using a corresponding bit in non-reserved bits of the PBCHinformation.

TABLE 3 5 bits 16 bits 3 bits Initial location of Reserved Initialbandwidth of an ePDCCH the ePDCCH

The third one is that, a broadband of the cell is divided into multiplenarrowbands, and the first specific content includes narrowbandconfiguration information, and in addition, the broadband of the cellfurther includes an ePDCCH, and the specific content further includesePDCCH configuration information; then the terminal parses out thenarrowband configuration information and the ePDCCH configurationinformation from the PBCH information, and performs step 309 and asubsequent step.

The fourth one is that, based on the foregoing three cases, the firstspecific content further includes comprehensive system informationincluding some or all content of system information, and thecomprehensive system information including the some or all content ofthe system information is parsed out from the PBCH information. Systemconfiguration information is acquired according to the comprehensivesystem information. A manner for indicating the comprehensive systeminformation in the PBCH information is the same as those shown in Table2 and Table 3, and is not described herein again.

Case 2:

The first specific content includes first control information, the firstcontrol information indicates a manner in which the terminal acquiressecond specific content, and the second specific content is used fortransferring the configuration information required by the terminal toaccess the network.

Step 302 may include the following steps.

3021: The terminal determines whether the first specific content isrequired.

3022: If the first specific content is required, the terminal parses outthe first specific content from the PBCH information.

In this embodiment of the present application, the following two mannersmay be used to indicate the first specific content using the PBCHinformation.

The first one is that, the first specific content is indicated using areserved bit in 24-bit binary code identifying the PBCH information.

As the first specific content is indicated using the reserved bit, thereserved bit may be changed as required without imposing any impact onoriginal content of the PBCH information, having great flexibility.

The second one is that, the first specific content is indicated using anon-reserved bit in 24-bit binary code identifying the PBCH information.

As the first specific content is indicated using the non-reserved bit,the PBCH information does not need to be modified, which reducesoperation content performed on a base station side, and reduces work ofthe base station.

303: The terminal parses out first control information from the firstspecific content.

304: The terminal receives second specific content in a manner indicatedin the first control information.

To diversify information transfer ways, make information transfer moreflexible, and use a frequency resource more efficiently, and for thesake of information security, the first control information may includeinformation about a time-frequency resource used by the base station tosend the second specific content to the terminal; and may furtherinclude information about a modulation and coding scheme and aredundancy version of the second specific content, and the like.

The base station constructs the PBCH information in the first or secondmanner, such that the PBCH information can transfer the agreed secondspecific content to the terminal.

If the base station constructs the PBCH information in the first manner,the base station performs division according to the constructed PBCHinformation to obtain a corresponding frequency resource fortransferring the first specific content, and selects a modulation andcoding scheme and a redundancy version of the first specific contentaccording to a corresponding bit of the PBCH information.

If the base station constructs the PBCH information in the secondmanner, the base station performs division according to the constructedPBCH information to obtain a corresponding frequency resource fortransferring the first specific content, and selects a corresponding bitof the PBCH information according to a modulation and coding scheme anda redundancy version of the first specific content.

Content executed on the base station side is that, the first specificcontent includes the information about the time-frequency resource fortransferring the second specific content, and the time-frequencyresource for transferring the second specific content is obtained by thebase station through division according to the PBCH information. In anembodiment, while the base station constructs the PBCH information, asshown in Table 4, the base station performs division according to theconstructed PBCH information to obtain a corresponding frequencyresource as a resource for transferring the second specific content, andsets a reserved bit of the PBCH information according to the modulationand coding scheme and the redundancy version of the second specificcontent, or as shown in Table 4, the base station indicates themodulation and coding scheme and the redundancy version of the secondspecific content using a corresponding bit in non-reserved bits of thePBCH information.

TABLE 4 9 bits 10 bits 5 bits Location of a resource for ReservedModulation and coding scheduling information of scheme and redundancyconfiguration information version

The terminal determines, according to the first specific content, atime-frequency resource for receiving the second specific content.

After determining that the time-frequency resource for receiving thesecond specific content is a PBCH, the terminal performs step 305. Afterdetermining that the time-frequency resource for receiving the secondspecific content is another time-frequency resource, the terminalperforms step 306.

The time-frequency resource used by the terminal to receive the secondspecific content may be agreed with the base station in advance, or maybe transferred by the base station to the terminal using the firstspecific content as described in this embodiment. If the manner in whichthe time-frequency resource is agreed in advance is used, step 304 maybe omitted, and steps 305 and 306 may be changed to that the terminaldirectly receives the second specific content from the agreedtime-frequency resource.

Content executed on the base station side is that, the second specificcontent includes information about a time-frequency resource fortransferring specific content, and the time-frequency resource fortransferring the specific content is obtained by the base stationthrough division according to the PBCH information. In an embodiment,while the base station constructs the PBCH information, as shown inTable 5, the base station performs division according to the constructedPBCH information to obtain a corresponding frequency resource as aresource for transferring the specific content, and sets a reserved bitof the PBCH information according to a modulation and coding scheme anda redundancy version of the specific content, or as shown in Table 5,the base station indicates a modulation and coding scheme and aredundancy version of the specific content using a corresponding bit innon-reserved bits of the PBCH information.

TABLE 5 9 bits 10 bits 5 bits Location of a resource Reserved Modulationand coding for configuration scheme and redundancy information version

305: The terminal parses out the second specific content from the PBCHinformation.

To diversify information transfer ways, make information transfer moreflexible, and use a frequency resource more efficiently, and for thesake of information security, the second specific content may includeinformation about a time-frequency resource used by the base station tosend the specific content to the terminal; and may further includeinformation about a modulation and coding scheme and a redundancyversion of the specific content, and the like.

In an embodiment, step 305 may include the following.

1: The terminal determines whether the second specific content isrequired.

3: If the second specific content is required, the terminal parses outthe second specific content from the PBCH information.

306: The terminal receives, from another time-frequency resourcereceived by the terminal, the second specific content sent by the basestation.

In steps 305 and 306, the terminal may agree with the base station inadvance about information such as the modulation and coding scheme andthe redundancy version of the second specific content, and the basestation may also transfer information such as the modulation and codingscheme and the redundancy version of the second specific content to theterminal using the first specific content. If the former manner is used,the terminal may directly parse out the second specific content from thePBCH information in a manner agreed in advance. If the latter manner isused, the terminal parses out the second specific content from the PBCHinformation in a setting manner, transferred in the first specificcontent, of the second specific content, and acquires the information,in the second specific content, about the time-frequency resource usedby the base station to send the specific content to the terminal,information about the modulation and coding scheme and the redundancyversion of the specific content, and the like.

For information in the second specific content, there may be thefollowing two cases, and the terminal executes different operationsaccording to different information in the second specific content.

Case 1:

The second specific content includes at least one of narrowbandconfiguration information, ePDCCH configuration information, and systemconfiguration information. In this case, there are the following fourexecution manners for the terminal.

The first one is that, a broadband of the cell is divided into multiplenarrowbands, the second specific content includes narrowbandconfiguration information, and the terminal parses out the narrowbandconfiguration information from the PBCH information. The process endsafter step 310 is performed.

Content executed on the base station side is that, the narrowbandconfiguration information includes at least one of information about anarrowband location, information about a quantity of the narrowbands,and information about narrowband composition, and the narrowbandlocation is obtained by the base station through division according tothe PBCH information. In an embodiment, while the base stationconstructs the PBCH information, as shown in Table 2, the base stationperforms division according to the constructed PBCH information toobtain a corresponding frequency resource as the narrowband location,and sets a reserved bit of the PBCH information according to a quantityof the narrowband resources and an interval between the narrowbandresources, or as shown in Table 2, the base station indicates a quantityof the narrowband resources and an interval between the narrowbandresources using a corresponding bit in non-reserved bits of the PBCHinformation.

The second one is that, a broadband of the cell includes an ePDCCH, thesecond specific content includes ePDCCH configuration information, andthe terminal parses out the ePDCCH configuration information from thePBCH information, and performs step 311 and a subsequent process.

Content executed on the base station side is that, the ePDCCHconfiguration information includes information about an ePDCCH location,and the ePDCCH location is obtained by the base station through divisionaccording to the PBCH information. In an embodiment, while the basestation constructs the PBCH information, as shown in Table 3, the basestation performs division according to the constructed PBCH informationto obtain a corresponding frequency resource as the ePDCCH location, andsets a reserved bit of the PBCH information according to a quantity ofePDCCHs, or as shown in Table 3, the base station indicates a quantityof ePDCCHs using a corresponding bit in non-reserved bits of the PBCHinformation.

The third one is that, a broadband of the cell is divided into multiplenarrowbands, and the second specific content includes narrowbandconfiguration information, and in addition, the broadband of the cellfurther includes an ePDCCH, and the second specific content furtherincludes ePDCCH configuration information; then the terminal parses outthe narrowband configuration information and the ePDCCH configurationinformation from the PBCH information, and performs step 310 and asubsequent process.

The fourth one is that, based on the foregoing three cases, the secondspecific content further includes comprehensive system informationincluding some or all content of system information, and the terminalparses out, from the PBCH information, the comprehensive systeminformation including the some or all content of the system information.System configuration is acquired according to the comprehensive systeminformation. A manner for indicating the comprehensive systeminformation in the PBCH information is the same as those shown in Table2 and Table 3, and is not described herein again.

Case 2:

The second specific content includes the first control information, thefirst control information indicates a manner in which the terminalacquires the second specific content, and the second specific content isused for transferring the configuration information required by theterminal to access the network. The terminal performs step 307 and asubsequent process.

In this embodiment of the present application, a specific manner forindicating the second specific content in the PBCH information is thesame as that of the first specific content, and is not described hereinagain.

307: Determine, according to the second specific content, atime-frequency resource for receiving third specific content.

When determining that the time-frequency resource for receiving thethird specific content is a PBCH, the terminal performs step 308. Whendetermining that the time-frequency resource for receiving the thirdspecific content is another time-frequency resource, the terminalperforms step 309.

The time-frequency resource used by the terminal to receive the thirdspecific content may be agreed with the base station in advance, or maybe transferred by the base station to the terminal using the secondspecific content as described in this embodiment. If the manner in whichthe time-frequency resource is agreed in advance is used, step 306 maybe omitted, and steps 308 and 309 may be changed to that the terminaldirectly receives, from the time-frequency resource agreed in advance,the third specific content sent by the base station.

308: The terminal parses out the third specific content from the PBCHinformation.

In an embodiment, step 308 may include the following.

1: The terminal determines whether the third specific content isrequired.

3: If the third specific content is required, the terminal parses outthe third specific content from the PBCH information.

309: The terminal receives, from another time-frequency resource, thespecific content sent by the base station.

In steps 308 and 309, the terminal may agree with the base station inadvance about a coding scheme and a redundancy version of the thirdspecific content, or the base station may transfer a coding scheme and aredundancy version of the third specific content to the terminal usingthe second specific content. If the former manner is used, the terminalmay directly parse out the third specific content from the PBCHinformation in a manner agreed in advance. If the latter manner is used,the terminal parses out the third specific content from the PBCHinformation according to the coding scheme and the redundancy version ofthe third specific content that are transferred in the second specificcontent.

For steps 308 and 309, In an embodiment, there are the following fourcases.

The first one is that, a broadband of the cell is divided into multiplenarrowbands, the third specific content includes narrowbandconfiguration information, and the terminal parses out the narrowbandconfiguration information from the PBCH information. The process endsafter step 310 is performed.

Content executed on the base station side is that, the narrowbandconfiguration information includes at least one of information about anarrowband location, information about a quantity of the narrowbands,and information about narrowband composition, and the narrowbandlocation is obtained by the base station through division according tothe PBCH information. In an embodiment, while the base stationconstructs the PBCH information, as shown in Table 2, the base stationperforms division according to the constructed PBCH information toobtain a corresponding frequency resource as the narrowband location,and sets a reserved bit of the PBCH information according to a quantityof the narrowband resources and an interval between the narrowbandresources, or as shown in Table 2, the base station indicates a quantityof the narrowband resources and an interval between the narrowbandresources using a corresponding bit in non-reserved bits of the PBCHinformation.

The second one is that, a broadband of the cell includes an ePDCCH, thethird specific content includes ePDCCH configuration information, andthe terminal parses out the ePDCCH configuration information from thePBCH information, and performs step 311 and a subsequent process.

Content executed on the base station side is that, the ePDCCHconfiguration information includes information about an ePDCCH location,and the ePDCCH location is obtained by the base station through divisionaccording to the PBCH information. In an embodiment, while the basestation constructs the PBCH information, as shown in Table 3, the basestation performs division according to the constructed PBCH informationto obtain a corresponding frequency resource as the ePDCCH location, andsets a reserved bit of the PBCH information according to a quantity ofePDCCHs, or as shown in Table 3, the base station indicates a quantityof ePDCCHs using a corresponding bit in non-reserved bits of the PBCHinformation.

The third one is that, a broadband of the cell is divided into multiplenarrowbands, and the third specific content includes narrowbandconfiguration information, and in addition, the broadband of the cellfurther includes an ePDCCH, and the third specific content furtherincludes ePDCCH configuration information; then the terminal parses outthe narrowband configuration information and the ePDCCH configurationinformation from the PBCH information, and performs step 310 and asubsequent process.

The fourth one is that, based on the foregoing three cases, the thirdspecific content further includes comprehensive system informationincluding some or all content of system information, and the terminalparses out, from the PBCH information, the comprehensive systeminformation including the some or all content of the system information.System configuration is acquired according to the comprehensive systeminformation.

In this embodiment of the present application, a specific manner forindicating the third specific content in the PBCH information is thesame as those of the first specific content and the second specificcontent, and is not described herein again.

310: The terminal performs frequency hopping among multiple narrowbandsor in an entire frequency band according to the narrowband configurationinformation that is parsed out, and selects a frequency range with agood signal to camp on.

311: The terminal determines, according to ePDCCH configurationinformation, an ePDCCH used by the frequency range that is camped on.

312: The terminal listens on the ePDCCH used by the frequency range thatis camped on, and receives, according to the ePDCCH, a message deliveredby a PDSCH.

In the embodiment corresponding to FIG. 3, steps 301, 308, 309, and 310,steps 301, 308, 309, 311, and 312, and steps 301, 308, 309, 310, 311,and 312 may separately form one independent technical solution, and aspecific implementation manner of the independent technical solution isthe same as the implementation manner in the embodiment corresponding toFIG. 3, and is not described herein again. Moreover, an order betweenstep 310 and steps 311 and 312 is not fixed, and may be adjusted asrequired during specific implementation.

According to the method for transferring information between a basestation and a terminal in an LTE system provided in this embodiment, thebase station can transfer information to the terminal using PBCHinformation that is broadcast, such that manners for transferringinformation between the base station and the terminal are diversified.Especially, for a terminal that does not support a PDCCH, a base stationcan still transfer information to the terminal.

To cooperate to implement the method in the foregoing embodiment, anembodiment of the present application provides a terminal. As shown inFIG. 4, the terminal includes a first receiving unit 41 configured toreceive a broadcast channel, and send the received broadcast channel toa first parsing unit 42, where the broadcast channel is not only usedfor transferring basic physical layer configuration information of acell, but also used for transferring first specific content agreedbetween the terminal and a base station, and the first specific contentis used for transferring configuration information required by theterminal to access a network, where in this embodiment of the presentapplication, which type of broadcast channel is used is not limited; forexample, the broadcast channel may be a PBCH, or may be an ePBCH; andthe first parsing unit 42 configured to receive the broadcast channelsent by the first receiving unit 41, and parse out the first specificcontent from the broadcast channel.

According to the terminal provided in this embodiment, a first receivingunit receives a broadcast channel, and a first parsing unit parses outfirst specific content from the broadcast channel, where the firstspecific content is used for transferring configuration informationrequired by the terminal to access a network, such that manners fortransferring information between a base station and the terminal arediversified. Especially, for a terminal that does not support a PDCCH, abase station can still transfer information to the terminal.

As an improvement of the embodiment corresponding to FIG. 4, anembodiment of the present application provides another terminal. In thisembodiment, a broadcast channel is a PBCH. As shown in FIG. 5, theterminal includes a first receiving unit 51 configured to receive abroadcast channel, and send the received broadcast channel to a firstparsing unit 52, where the broadcast channel is not only used fortransferring basic physical layer configuration information of a cell,but also used for transferring first specific content agreed between theterminal and a base station, and the first specific content is used fortransferring configuration information required by the terminal toaccess a network; and the first parsing unit 52 configured to receivethe broadcast channel sent by the first receiving unit, and parse outthe first specific content from the broadcast channel.

Optionally, a broadband of the cell is divided into multiplenarrowbands, and the first specific content includes narrowbandconfiguration information, and the first parsing unit 52 includes afirst parsing subunit 521 configured to parse out the narrowbandconfiguration information from the first specific content, and theterminal further includes a first frequency modulation unit 53configured to perform frequency hopping among the multiple narrowbandsor in an entire frequency band according to the narrowband configurationinformation that is parsed out, and select a narrowband or a frequencyrange with a good signal to camp on.

Optionally, the narrowband configuration information includes at leastone of information about a narrowband location, information about aquantity of the narrowbands, and information about narrowbandcomposition.

Optionally, the broadband of the cell or a narrowband obtained throughdivision includes an ePDCCH, and the first specific content furtherincludes ePDCCH configuration information, and the first parsing unit 52further includes a second parsing subunit 522 configured to parse outthe ePDCCH configuration information from the broadcast channel, and theterminal further includes a first determining unit 54 configured todetermine a used ePDCCH according to the ePDCCH configurationinformation; and a first listening unit 55 configured to listen on theused ePDCCH, and receive a PDSCH according to the ePDCCH.

Optionally, the first specific content further includes comprehensivesystem information including some or all content of system information,and the first parsing unit 52 further includes a third parsing subunit523 configured to parse out the comprehensive system information fromthe first specific content, and the terminal includes a first acquiringunit configured to acquire system configuration information according tothe comprehensive system information.

Optionally, the first specific content includes first controlinformation, the first control information indicates a manner in whichthe terminal acquires second specific content, and the terminal furtherincludes a second parsing unit 56 configured to receive the firstspecific content sent by the first parsing unit, parse out the firstcontrol information from the first specific content, and send the firstcontrol information that is parsed out to a second receiving unit; andthe second receiving unit 57 configured to receive the first controlinformation sent by the second parsing unit, and receive the secondspecific content in the manner indicated in the first controlinformation.

To diversify information transfer ways, make information transfer moreflexible, and use a frequency resource more efficiently, and for thesake of information security, in this embodiment, the first controlinformation may include information about a time-frequency resource usedby the base station to send the second specific content to the terminal;and may further include information about a modulation and coding schemeand a redundancy version of the second specific content, and the like.

Optionally, a broadband of the cell is divided into multiplenarrowbands, and the second specific content includes narrowbandconfiguration information, and the second receiving unit 57 includes afourth parsing subunit 571 configured to parse out the narrowbandconfiguration information from the second specific content, and theterminal further includes a second frequency modulation unit 58configured to perform frequency hopping among the multiple narrowbandsor in an entire frequency band according to the narrowband configurationinformation that is parsed out, and select a narrowband or a frequencyrange with a good signal to camp on.

Optionally, the narrowband configuration information includes at leastone of information about a narrowband location, information about aquantity of the narrowbands, and information about narrowbandcomposition.

Optionally, the broadband of the cell or a narrowband obtained throughdivision includes an ePDCCH, and the second specific content furtherincludes ePDCCH configuration information, the second receiving unit 57further includes a fifth parsing subunit 572 configured to parse out theePDCCH configuration information from the broadcast channel, and theterminal further includes a second determining unit 59 configured todetermine a used ePDCCH according to the ePDCCH configurationinformation; and a second listening unit 510 configured to listen on theused ePDCCH, and receive a PDSCH according to the ePDCCH.

Optionally, the second specific content further includes comprehensivesystem information including some or all content of system information,and the second receiving unit 57 further includes a sixth parsingsubunit 573 configured to parse out, from the second specific content,the comprehensive system information including the some or all contentof the system information; and a second acquiring subunit configured toacquire system configuration information according to the comprehensivesystem information.

Optionally, the first control information includes information about atime-frequency resource used by the terminal to receive the secondspecific content, and the second receiving unit 57 includes a firstreceiving subunit 574 configured to, when the time-frequency resourcefor receiving the second specific content is a broadcast channel, parseout the second specific content from the broadcast channel; and a secondreceiving subunit 575 configured to, when the time-frequency resourcefor receiving the second specific content is another time-frequencyresource, receive, from the other time-frequency resource, the secondspecific content sent by the base station.

Optionally, the second specific content further includes systemconfiguration information, and the second receiving unit 57 furtherincludes a sixth parsing subunit 576 configured to parse out the systemconfiguration information from the second specific content.

Optionally, the first control information further includes at least oneof a coding scheme and a redundancy version of the second specificcontent, and the parsing out, by the first receiving subunit 574, thesecond specific content from the broadcast channel is parsing out, bythe first receiving subunit 574, the second specific content from thebroadcast channel according to the coding scheme and the redundancyversion in the first control information.

Optionally, the second specific content includes second controlinformation, the second control information indicates a manner in whichthe terminal acquires third specific content, and the terminal furtherincludes a third parsing unit 511 configured to receive the secondspecific content sent by the second receiving unit, parse out the secondcontrol information from the second specific content, and send thesecond control information that is parsed out to a third receiving unit;and the third receiving unit 512 configured to receive the secondcontrol information sent by the third parsing unit, and receive thethird specific content in the manner indicated in the second controlinformation.

To diversify information transfer ways, make information transfer moreflexible, and use a frequency resource more efficiently, and for thesake of information security, in this embodiment, the second controlinformation may include information about a time-frequency resource usedby the base station to send the third specific content to the terminal;and may further include information about a modulation and coding schemeand a redundancy version of the second specific content, and the like.

Optionally, the second control information includes information about atime-frequency resource used by the terminal to receive the thirdspecific content, and the third receiving unit 512 includes a thirdreceiving subunit 5121 configured to, when the time-frequency resourcefor receiving the third specific content is a broadcast channel, parseout the third specific content from the broadcast channel; and a fourthreceiving subunit 5122 configured to, when the time-frequency resourcefor receiving the third specific content is another time-frequencyresource, receive, from the other time-frequency resource, the thirdspecific content sent by the base station.

Optionally, the second control information further includes at least oneof a coding scheme and a redundancy version of the third specificcontent, and the parsing out, by the third receiving subunit 5121, thethird specific content from the broadcast channel is parsing out, by thethird receiving subunit 5121, the third specific content from thebroadcast channel according to the coding scheme and the redundancyversion in the second control information.

Optionally, a broadband of the cell is divided into multiplenarrowbands, and the third specific content includes narrowbandconfiguration information, and the terminal further includes a thirdfrequency modulation unit 513 configured to perform frequency hoppingamong the multiple narrowbands or in an entire frequency band accordingto the narrowband configuration information that is parsed out, andselect a narrowband or a frequency range with a good signal to camp on.

Optionally, the narrowband configuration information includes at leastone of information about a narrowband location, information about aquantity of the narrowbands, and information about narrowbandcomposition.

Optionally, the broadband of the cell or a narrowband obtained throughdivision includes an ePDCCH, the third specific content further includesePDCCH configuration information, the parsing out, by the thirdreceiving subunit 5121, the third specific content from the broadcastchannel further includes parsing out, by the third receiving subunit5121, the ePDCCH configuration information from the broadcast channel,and the terminal further includes a third determining unit 514configured to determine a used ePDCCH according to the ePDCCHconfiguration information, and send information about the determinedused ePDCCH to a listening unit; and a third listening unit 515configured to receive the ePDCCH information sent by the determiningunit, listen on the used ePDCCH, and receive a PDSCH according to theePDCCH.

Optionally, the third specific content further includes comprehensivesystem information including some or all content of system information,and the third receiving unit 512 further includes a seventh parsingsubunit configured to parse out the system configuration informationfrom the third specific content; and a third acquiring subunitconfigured to acquire system configuration information according to thecomprehensive system information.

Optionally, the first specific content, the second specific content, andthe third specific content are indicated using a reserved bit in binarycode identifying the broadcast channel.

Optionally, the narrowband configuration information includesinformation about a narrowband location, and the narrowband location isobtained by the base station through division according to the broadcastchannel.

Optionally, the ePDCCH configuration information includes informationabout an ePDCCH location, and the ePDCCH location is obtained by thebase station through division according to the broadcast channel.

Optionally, the time-frequency resource in the first control informationand used by the terminal to receive the second specific content and/orthe time-frequency resource in the second control information and usedby the terminal to receive the third specific content is obtained by thebase station through division according to the broadcast channel.

Optionally, as shown in FIG. 6, the first parsing unit 52 includes adetermining subunit 521 configured to determine whether the firstspecific content is required, and if the first specific content isrequired, send an indication to a parsing subunit; and the parsingsubunit 522 configured to, after receiving the indication sent by thedetermining subunit, parse out the first specific content from thebroadcast channel.

Optionally, the broadcast channel is a PBCH or an ePBCH.

Optionally, the coding scheme and the redundancy version of the secondspecific content in the first control information and/or the codingscheme and the redundancy version of the third specific content in thesecond control information are obtained by the base station throughdivision according to the broadcast channel.

According to the terminal provided in this embodiment, a first receivingunit receives a PBCH, and a first parsing unit parses out first specificcontent from the PBCH, where the first specific content is used fortransferring configuration information required by the terminal toaccess a network, such that manners for transferring information betweena base station and the terminal are diversified. Especially, for aterminal that does not support a PDCCH, a base station can stilltransfer information to the terminal.

To cooperate to implement the foregoing method, an embodiment of thepresent application provides a base station. As shown in FIG. 7, thebase station includes a broadcasting unit 71 configured to send abroadcast channel to a terminal, where the broadcast channel is not onlyused for transferring basic physical layer configuration information ofa cell, but also used for transferring first specific content agreedbetween the terminal and the base station, and the first specificcontent is used for transferring configuration information required bythe terminal to access a network.

According to the base station provided in this embodiment, abroadcasting unit sends a broadcast channel to a terminal, where thebroadcast channel is not only used for transferring basic physical layerconfiguration information of a cell, but also used for transferringfirst specific content agreed between the terminal and the base station,and the first specific content is used for transferring configurationinformation required by the terminal to access a network, such thatmanners for transferring information between the base station and theterminal are diversified. Especially, for a terminal that does notsupport a PDCCH, a base station can still transfer information to theterminal.

As an improvement of the embodiment corresponding to FIG. 7, anembodiment of the present application provides another base station. Inthis embodiment, a broadcast channel is a physical broadcast channel. Asshown in FIG. 8, the base station includes a broadcasting unit 81configured to send a broadcast channel to a terminal, where thebroadcast channel is not only used for transferring basic physical layerconfiguration information of a cell, but also used for transferringfirst specific content agreed between the terminal and the base station,and the first specific content is used for transferring configurationinformation required by the terminal to access a network.

Optionally, a broadband of the cell is divided into multiplenarrowbands, and the first specific content includes narrowbandconfiguration information, such that the terminal performs frequencyhopping among the multiple narrowbands or in an entire frequency bandaccording to the narrowband configuration information that is parsedout, and selects a narrowband or a frequency range with a good signal tocamp on.

Optionally, the narrowband configuration information includes at leastone of information about a narrowband location, information about aquantity of the narrowbands, and information about narrowbandcomposition.

Optionally, the broadband of the cell or a narrowband obtained throughdivision includes an ePDCCH, and the first specific content furtherincludes ePDCCH configuration information, such that the terminaldetermines a used ePDCCH according to the ePDCCH configurationinformation; and listens on the used ePDCCH, and receives a PDSCHaccording to the ePDCCH.

Optionally, the first specific content further includes comprehensivesystem information including some or all content of system information,such that the terminal parses out, from the first specific content, thecomprehensive system information including the some or all content ofthe system information, and further acquires the system configurationinformation.

Optionally, the first specific content includes first controlinformation, the first control information indicates a manner in whichthe terminal acquires second specific content, and the second specificcontent is used for transferring the configuration information requiredby the terminal to access the network, such that the terminal parses outthe first control information from the first specific content; andreceives the second specific content in the manner indicated in thefirst control information.

Optionally, a broadband of the cell is divided into multiplenarrowbands, and the second specific content includes narrowbandconfiguration information, such that the terminal performs frequencyhopping among the multiple narrowbands or in an entire frequency bandaccording to the narrowband configuration information that is parsedout, and selects a narrowband or a frequency range with a good signal tocamp on.

Optionally, the narrowband configuration information includes at leastone of information about a narrowband location, information about aquantity of the narrowbands, and information about narrowbandcomposition.

Optionally, the broadband of the cell or a narrowband obtained throughdivision includes an ePDCCH, and the second specific content furtherincludes ePDCCH configuration information, such that the terminaldetermines a used ePDCCH according to the ePDCCH configurationinformation; and listens on the used ePDCCH, and receives a PDSCHaccording to the ePDCCH.

Optionally, the second specific content further includes comprehensivesystem information including some or all content of system information,such that the terminal parses out, from the second specific content, thecomprehensive system information including the some or all content ofthe system information, and further acquires the system configurationinformation.

Optionally, the first control information includes information about atime-frequency resource used by the terminal to receive the secondspecific content, such that the terminal receives the second specificcontent using the corresponding time-frequency resource.

Optionally, the first control information further includes at least oneof a coding scheme and a redundancy version of the second specificcontent, such that the terminal parses out the second specific contentfrom the broadcast channel according to the coding scheme and theredundancy version in the first control information.

Optionally, the second specific content includes second controlinformation, the second control information indicates a manner in whichthe terminal acquires third specific content, and the third specificcontent is used for transferring the configuration information requiredby the terminal to access the network, such that the terminal parses outthe second control information from the second specific content; andreceives the third specific content in the manner indicated in thesecond control information.

Optionally, the second control information includes information about atime-frequency resource used by the terminal to receive the thirdspecific content, such that the terminal receives the third specificcontent using the corresponding time-frequency resource.

Optionally, the second control information further includes at least oneof a coding scheme and a redundancy version of the third specificcontent, such that the terminal parses out the third specific contentfrom the broadcast channel according to the coding scheme and theredundancy version in the second control information.

Optionally, a broadband of the cell is divided into multiplenarrowbands, and the third specific content includes narrowbandconfiguration information, such that the terminal performs frequencyhopping among the multiple narrowbands or in an entire frequency bandaccording to the narrowband configuration information that is parsedout, and selects a narrowband or a frequency range with a good signal tocamp on.

Optionally, the narrowband configuration information includes at leastone of information about a narrowband location, information about aquantity of the narrowbands, and information about narrowbandcomposition.

Optionally, the broadband of the cell or a narrowband obtained throughdivision includes an ePDCCH, and the third specific content furtherincludes ePDCCH configuration information, such that the terminaldetermines a used ePDCCH according to the ePDCCH configurationinformation; and listens on the used ePDCCH, and receives a PDSCHaccording to the ePDCCH.

Optionally, the third specific content further includes comprehensivesystem information including some or all content of system information,such that the terminal parses out, from the third specific content, thecomprehensive system information including the some or all content ofthe system information, and further acquires the system configurationinformation.

Optionally, the base station further includes a first setting unit 82configured to set a reserved bit of the broadcast channel according tothe first specific content, the second specific content, and the thirdspecific content, and/or identify the first specific content, the secondspecific content, and the third specific content using a correspondingbit of the broadcast channel.

Optionally, the narrowband configuration information includesinformation about a narrowband location, and the base station furtherincludes a first dividing unit 83 configured to perform divisionaccording to the broadcast channel to obtain the narrowband location;and a second setting unit 84 configured to set a reserved bit of thebroadcast channel according to a quantity of the narrowbands, and sendthe broadcast channel to the broadcasting unit 81.

Optionally, the ePDCCH configuration information includes informationabout an ePDCCH location, and the base station further includes a seconddividing unit 85 configured to perform division according to thebroadcast channel to obtain the ePDCCH location; and a third settingunit 86 configured to set a reserved bit of the broadcast channelaccording to a quantity of ePDCCHs, and send the broadcast channel tothe broadcasting unit.

Optionally, the first control information includes the time-frequencyresource used by the terminal to receive the second specific content,and the base station further includes a third dividing unit 87configured to perform division according to the broadcast channel toobtain a time-frequency resource used when the specific content is sentto the terminal, and send an indication to a first sending unit; and thefirst sending unit 88 configured to, after receiving the indication sentby the third dividing unit, send the specific content to the terminalusing the time-frequency resource obtained through division.

Optionally, the second control information includes the time-frequencyresource used by the terminal to receive the third specific content, andthe base station further includes a fourth dividing unit 89 configuredto perform division according to the broadcast channel to obtain atime-frequency resource used when the second specific content is sent tothe terminal, and send an indication to a second sending unit; and thesecond sending unit 810 configured to, after receiving the indication ofthe fourth dividing unit, send the second specific content to theterminal using the time-frequency resource for transferring the secondspecific content.

Optionally, the broadcast channel is a PBCH or an ePBCH.

Optionally, the base station further includes a fourth dividing unit 811configured to select the coding scheme and the redundancy version of thesecond specific content in the first control information according tothe broadcast channel, and/or configured to select the coding scheme andthe redundancy version of the third specific content in the secondcontrol information.

According to the base station provided in this embodiment, PBCHinformation broadcast by a broadcasting unit is not only used fortransferring basic physical layer configuration information of a cell,but also used for transferring specific content agreed between aterminal and the base station, such that manners for transferringinformation between the base station and the terminal are diversified.Especially, for a terminal that does not support a PDCCH, a base stationcan still transfer information to the terminal.

An embodiment of the present application provides a system fortransferring information between a base station and a terminal,including any base station and any terminal that are described in theforegoing embodiments.

According to the system for transferring information between a basestation and a terminal provided in this embodiment, PBCH informationbroadcast by a broadcasting unit on a base station side is not only usedfor transferring basic physical layer configuration information of acell, but also used for transferring various specific content agreedbetween the terminal and the base station, and the terminal receives thePBCH information sent by the base station, and acquires requiredspecific content, such that manners for transferring information betweenthe base station and the terminal are diversified. Especially, for aterminal that does not support a PDCCH, a base station can stilltransfer information to the terminal.

In this embodiment of the present application, corresponding content maybe indicated using a combination of any bits in 24-bit binary code ofthe PBCH information, which may be set according to an actualrequirement in the implementation process of the foregoing solutions,and is not limited in the present application.

The technical solutions described in the embodiments of the presentapplication are mainly applied to an LTE system.

Based on the foregoing descriptions of the implementation manners, aperson skilled in the art may clearly understand that the presentapplication may be implemented by software in addition to necessaryuniversal hardware or by hardware only. In most circumstances, theformer is a preferred implementation manner. Based on such anunderstanding, the technical solutions of the present application may beimplemented in a form of a software product. The computer softwareproduct is stored in a readable storage medium, such as a floppy disk, ahard disk or an optical disc of a computer, and includes severalinstructions for instructing a computer device (which may be a personalcomputer, a server, or a network device) to perform the methodsdescribed in the embodiments of the present application.

The foregoing descriptions are merely specific implementation manners ofthe present application, but are not intended to limit the protectionscope of the present application. Any variation or replacement readilyfigured out by a person skilled in the art within the technical scopedisclosed in the present application shall fall within the protectionscope of the present application. Therefore, the protection scope of thepresent application shall be subject to the protection scope of theclaims.

What is claimed is:
 1. A communication system, comprising: a networkdevice configured to: set system frame number (SFN) information andfirst content in a message, wherein the first content comprises firstcontrol information that indicates a manner in which a terminal devicereceives second content; and send the message on a physical broadcastchannel; and the terminal device configured to: receive the message onthe physical broadcast channel from the network device; parse out thefirst control information from the first content; and use the firstcontrol information to access a network.
 2. The communication system ofclaim 1, wherein the network device is further configured to send thesecond content comprising configuration information, wherein theterminal device requires the configuration information to access thenetwork, and wherein the terminal device is further configured toreceive the second content from the network device in the mannerindicated in the first control information.
 3. The communication systemof claim 2, wherein the second content comprises second controlinformation that indicates a manner in which the terminal devicereceives third content, wherein the terminal device is furtherconfigured to parse out, from the second content, the second controlinformation, and wherein the second control information indicates amanner in which the terminal device receives third content.
 4. Thecommunication system of claim 3, wherein the network device is furtherconfigured to send, via the third content in the manner indicated in thesecond control information, configuration information, and wherein theterminal device requires the configuration information to access thenetwork.
 5. The communication system of claim 3, wherein the terminaldevice is further configured to: receive the third content in the mannerindicated in the second control information; and obtain theconfiguration information from the third content, and wherein theterminal device requires the configuration information to access thenetwork.
 6. The communication system of claim 5, wherein the thirdcontent comprises comprehensive system information comprising some orall content of system information, and wherein the terminal device isfurther configured to parse out, from the third content, comprehensivesystem information comprising some or all of the content.
 7. Thecommunication system of claim 3, wherein the network device is furtherconfigured to: set at least one bit of the physical broadcast channelaccording to each of the first content, the second content, and thethird content; and identify each of the first content, the secondcontent, and the third content using a corresponding bit of the physicalbroadcast channel.
 8. The communication system of claim 3, wherein thesecond content indicates a time-frequency resource, a coding scheme anda redundancy version, according to which the terminal device receivesthird specific content from the base station.
 9. The communicationsystem of claim 3, wherein the third content includes narrowbandconfiguration information, and wherein the narrowband configurationinformation comprises information indicating a narrowband location. 10.The communication system of claim 1, wherein the second contentcomprises comprehensive system information comprising some or allcontent of system information, and wherein the terminal device isfurther configured to parse out, from the second content, thecomprehensive system information comprising some or all of the content.11. The communication system of claim 1, wherein the first controlinformation indicates a time-frequency resource on which the terminaldevice receives the second content.
 12. A communication method,comprising: setting, by a network device, system frame number (SFN)information and first content in a message, wherein the first contentcomprises first control information that indicates a manner in which aterminal device receives second content; sending, by the network device,the message on a physical broadcast channel; receiving, by the terminaldevice, the message on the physical broadcast channel; parsing out, bythe terminal device, the first control information from the firstcontent; and using, by the terminal device, the first controlinformation to access a network.
 13. The communication method of claim12, wherein the second content comprises comprehensive systeminformation comprising some or all content of system information,wherein the communication method further comprises parsing out, by theterminal device, the comprehensive system information from the secondcontent, and wherein the comprehensive system information comprises someor all of the content.
 14. The communication method of claim 12, furthercomprising: sending, by the network device via the second content,configuration information, wherein the configuration information isrequired by the terminal device to access the network; and receiving, bythe terminal device, the second content from the network device in amanner indicated in the first control information.
 15. The communicationmethod of claim 14, wherein the second content comprises second controlinformation that indicates a manner in which the terminal devicereceives third content, wherein the communication method furthercomprises parsing out, by terminal device, the second controlinformation from the second content, and wherein the second controlinformation indicates a manner in which the terminal device receivesthird content.
 16. The communication method of claim 15, furthercomprising sending, by the network device in the manner indicated in thesecond control information, configuration information via the thirdcontent, wherein the terminal device requires the configurationinformation to access the network.
 17. The communication method of claim15, further comprising: setting, by the network device, at least one bitof the physical broadcast channel according to each of the firstcontent, the second content, and the third content; and identifying, bythe network device, each of the first content, the second content, andthe third content using a corresponding bit of the physical broadcastchannel.
 18. The communication method of claim 15, further comprising:receiving, by the terminal device, the third content in the mannerindicated in the second control information; and obtaining, by theterminal device, the configuration information from the third content,wherein the terminal device requires the configuration information toaccess the network.
 19. The communication method of claim 18, whereinthe third content comprises comprehensive system information comprisingsome or all content of system information, wherein the communicationmethod further comprises parsing out, by the terminal device,comprehensive system information from the third content, and wherein thecomprehensive system information comprises some or all the content. 20.The communication method of claim 15, wherein the second contentindicates a time-frequency resource, a coding scheme and a redundancyversion, according to which the terminal device receives third specificcontent from the base station.
 21. The communication method of claim 15,wherein the third content includes narrowband configuration informationand the narrowband configuration information comprises informationindicating a narrowband location.
 22. The communication method of claim12, wherein the first control information indicates a time-frequencyresource on which the terminal device receives the second content.